Presence sensor



FIG. 1 is a perspective view of a presence sensor, showing my new design;

FIG. 2 is a front elevational view;

FIG. 3 is a bottom plan view;

FIG. 4 is a left-hand side elevational view, wherein the right-hand side elevational view is identical; and,

FIG. 5 is a rear elevational view thereof. 

The ornamental design for a presence sensor, as shown and described. 